Nozzle-plug.



A. R. DODGE.

NOZZLE PLUG.

APPLICATION FILED MAY 1. 1914.

1 ,1 92,76 1 I Patented Jul 25, 1916.

[m/ntor: Austin RDodge,

His Attrne TED STATEd PATEN @FFTFE.

AUSTIN R. DODGE, 0F SCHENECTADY, NEW YORK, .ASSIGNOR T0 GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK. i

NOZZLE-PLUG.

Specification of Letters Patent.

Patented July 25, 1916.

tions in the rate of flow of the fluid being metered. These nozzle plugs, as is well known, operate on the principle of the Pitot tube.

One object of my invention is to provide a nozzle plug in which the reservoirs, now commonly placed in the piping connecting the nozzle plug and the manometer for maintaining more nearly constant the static pressure heads, are located directly in the base of the plug itself.

A further object is to provide such a plug having a single set of leading-in openings and which is designed so that it may be adjusted for metering fluid in a pipe, no matter at what angle the pipe extends, or in which direction the flow may be,

A still further object is to provide a nozzle plug which may be readily taken apart for cleaning in case it becomes clogged.

These and other objects of my invention, as well as the novel features of structure,

will appear from the following specification,

wherein I have described a certain specific embodiment of my invention. r

In the drawings, Figure 1 is a longitudinal sectional view through a nozzleplug illustrating one form which my invention may take, the section being taken ina horizontal plane; Fig. 2 is an end elevation looking toward the right in Fig. 1; and Figs. 3 and 4: are views similar to Fig. 1 showing other forms of my invention.

In carrying out my invention I form the base of the plug in two parts or sections. One of these sections carries the leading and trailing tubes. In the other section are formed two reservoirs into the base of which connect the leading and trailing pipes which transmit the pressures from the leading and trailing tubes to the manometer. The two sections are constructed to be firmly fastened together, the fastening means being such that the sections may be readily taken apart and also such that one section may be turned relatively to the other, so as to bring the reservoirs into the correct position as re lated to the leading and trailing tubes for any particular pipe to which the nozzle plug is to be attached. When connected together, the leading and trailing tubes of the one section will communicate with the respective reservoirs of the othersection.

Referring to the drawing, Fig. 1, the base of the nozzle plug is shown as being made in two sections 5 and 6. The section 5 is a tubular member having a threaded portion 7 adapted to be threaded into an opening in the conduit through which the fluid to be metered flows, and a tapered projecting nipple 8. The section 6 comprises a nipple 9 having a tapered bore as at 10 adapted to receive the tapered nipple 8. These tapered surfaces cooperate to form a tight joint and are pulled together and held by suitable means, as the threaded nut 11. Formed integral with the nipple 9 are the reservoirs l2 and 13, one being located on each side of the central longitudinally extending portion 14. This central portion has a longitudinal borelG connected with reservoir 13 by the passage 15. The outer end of the central portion 14 is threaded to receive the cap 17 which forms a chamber 18 at the end of the plug. This chamber communicates with the reservoir 12. by the passages 19. The cap 17 has a central opening closed by a plug 17 This plug may be removed for cleaning purposes. The section 5 carries the lea ding tube 20 in which are formed the leading orifices 21 and the. trailing tube 22 in which are the trailing orifices 23. In the present instance these tubes are shown as being concentric, the trailing tube being inside the leading tube and terminating in a block 23 in which are formed the orifices 23 already referred to. It will be understood, however, that the invention is not limited to this arrangement. Between the tubes 20' and 22 is an intermediate tube 24 between which and tube 22 is the passage 24:. This tube is preferably carried by the base section 6. The leading tube communicates with the reservoir 18 by way of the passage 24: and the passage 15. The trailing tube extends through the bore 16 into the chamber 18 thus communicating with the reservoir 12 by passage 19. A suitconnect into the bottoms of the reservoir.

28 are removable plugsclosing openings in the top of the reservoir. These openings are used for initially filling the piping with water as'is well known. In using the nozzle plug, the leading orifices are made to face the flowing stream and the trailing orifices are made to extend at an angle thereto.

The reservoirs must occupy a vertical position with the pipes 26 and 27 coming in at the bottom. From this it is obvious that the reservoirs must occupy a position relative to the leading and trailing tubes, depending upon the angle of the pipe to which the plug is to be attached and the direction of the flow. By constructing the base of the nozzle plug in two parts or sections, one of which carries the leading and trailing tube and the other the reservoirs, it will be clear that the plug may be readily adapted for use in connection with a pipe extending at any angle and through which the fluid to be metered flows in either direction, it being only necessary to loosen the connector 11 and turn the two base sections relatively to each other until the reservoirs occupy the desired position with relation to the openings in the leading and trailing tubes. The base section 5 is preferably provided on oppositesides with flattened surfaces 5 shown in dotted lines, the planes of which are parallel to each other and to a plane through the center of the leading tube and its orifices. Upon these flattened surfaces are arrows or other suitable indicia for indicating the direction in which the leading orifices face. In adjusting the nozzle plug in a conduit, the base section 5 will be first turned so that the flat surfaces 5 are parallel with the conduit and the orifices face in the correct direction. The base section 6 is then turned to bring the reservoirs into a vertical position. The fastening means 11 is then tightened to hold the two sections in adjusted position.

In Fig. 3 is shown another formofmy invention in which the reservoirs are arranged longitudinal alinement with the leading and trailnig tubes. In this arrangement the one section 28 of the base carries theleading and trailing tubes 29 and 30, a andthe other section has formed therein the reservoirs 31 and 32.

The leading tube 29 communicates directly with the reservoir 31. The trailing tube 30 extends through reservoir 31 and communicates with reservoir 32.

Communication between the two reservoirs is out off by the packing 33 which surrounds the tube and is held in place by a hollow threaded nut S l. Access to this nut for re moving or adjusting it may be obtained by removing the plug'35 which closes an opening in the upper part of the reservoir 32.

affect the static pressure heads of each reservoir by the same amount. When the conduit in connection with which the nozzle plug is used is lagged, as will ordinarily be the case with steam flow, the base section which carries the leading and trailing tubes will be made of sufficient length to bringthe ,cou-

pling for the base sections well outside the lagging. This is illustrated in Fig. 4 where the conduit 38, through which the fluid to be metered flows, is shown as being lagged as at 40. By this arrangement the base sections and the coupling are readily accessible for adjustment. Forming the reservoirs in the base of the nozzle plug is of decided advan tage in that it greatly simplifies the piping arrangement between the nozzle plug and the manometer, permitting of a piping arrangement which requires fewer connections, which is more compact, and which is much more easily installed. This will be, appreciated when it is considered that it is necessary that the reservoirs be at exactly the same height and be on the correct level as related to the leading and trailing tubes in order to insure. accuracy in the readings of the instrument. I

In connection with any of the forms illus trated, it will be obvious that the nozzle plug can be. readily taken apart either for cleaning of for other purposes.

In accordance with the provisions ofthe I patent statutes I have described the principle of operation of my invention, together with the apparatus which I now consider to.

represent the best embodiment thereof; but

I desire to have it understood that the apparatus shown is only illustrative and that the invention can be carried out by other means. I I

What I claim as new and desire'to secure with the reservoirs to receive pipe connections for connecting the nozzleplug to a manometer.

2. In a nozzle plug, the combination of a ibase provided with an angular depending portion having two reservoirs formed therein, and tubes having leading and trailing orifices therein carried by the base and communicating with the two reservoirs at the upper end thereof, and at the same level, said depending portion having openings therein which communicate with the reservoirs to receive pipe connections for connecting the nozzle plug to a manometer.

A nozzle plug having its base formed in two sections, and leading and trailing tubes carried by one of said sections, the other of said sections having reservoirs formed therein with which said tubes communicate, said tubes communicating with said reservoirsat the upper portions thereof, said last named section being further provided with openings to receive pipe connections for connecting the nozzle plug to a manometer.

4. In a nozzle plug, the combination of a base formed in two sections, means for fastening the sections together, said means permitting the sections to be turned relatively to each other, means containing leading and trailing orifices carried by one of said sections, reservoirs formed in the other of said sections, and means connecting the said leading and trailing orifices to the reservoirs.

, 5. In a nozzle plug, the combination of a base section having a tapered socket, a second base section having a projecting tapered nipple which fits into said socket, reservoirs formed in one of said sections, and leading and trailing tubes carried by the other of said sections, which tubes communicate with the reservoirs.

6. In a nozzle plug, the combination of a base formed in two sections, means containing leading and trailing orifices carried by one of said sections, said other section being provided with openings with which the leading and trailing orifices communicate, and detachable means for fastening said sections together, said sections being adjustable relative to each other in a plane at right angles to the longitudinal axis of the plug.

7. In a nozzle plug, the combination with a base provided with an angular portion having concentric reservoirs formed therein and passages communicating with them, of means containing leading and'trailing or'- fices carried by said base and communicating with the upper portions of the reservoirs through the passages therein.

8. A nozzle plug having its base formed in two sections one of which carries the leading and trailing tubes and the other of which has concentric reservoirs formed therein with which said tubes communicate,

the axis of said reservoirs being at an angle to the longitudinal axis of the tubes.

9. In a nozzle plug, the combination of a base formed in two sections, means containmg leading and trailing orifices carried by one of said sections, concentric reservoirs formed in the other of said sections, and

means connecting the said leading and trailing orifices to the reservoirs, the axis of said reservoirs being at an angle to the longitudinal axis of the tubes.

10. In an apparatus of the character described, the combination with a member adapted to be threaded into a conduit and carrying tubes containing leading and trailing orifices, of a second member comprising reservoirs adapted to be attached directly to the first named member with the tubes communicatlng with said reservoirs adjacent their upper ends said second member being provided with openings which communicate with said reservoirs to receive pipe connections for connecting the nozzle plug to a manometer.

11. In an apparatus of the character described, the combination of a member adapted to be threadedinto a conduit and carrying tubes containing leading and trailing orifices, a second member comprising two reservoirs, and a single coupling for joining said two members together with the tubes in communication with said reservoirs at points adjacent their upper ends and in the same horizontal plane.

12. In an apparatus of the character described, the combination of a base member carryin tubes containing leading and trailing orifices, and means forming a pair of reservoirs adapted to be connected directly to said base member with the reservoirs extending at right angles to and in communication with said tubes.

13. In an apparatus of the character described, the combination of a member adapted to be associated with a conduit and carry ing means for insertion thereinto for creating a pressure difl'erence, means forming passages through which said pressure difference is transmitted, and a second member comprising reservoirs which is connected directly to and carried by said first member with said passages communicating with said reservoirs adjacent their upper ends, said second member being provided with openings which communicate with the reservoirs to receive pipe connections for connecting the nozzle plug to a manometer.

14. In an apparatus of the character described, the combination of a member adapted to be threaded into a conduit, and carrying means for creating a pressure difference, means forming conduits through which the pressure diiference is transmitted, a second member comprising reservoirs, and coupling means for connecting said two members together with the conduits in communication with said reservoirs, said coupling means ing ori'ces, and a second member c0mpris ing reservoirs adapted to be connected. to the base member with said tubes communicating with'the upper ends of" said reservoirs, said second member having openings therein which communicate with the lower ends of the reservoirs and which areadapted to re-' celve plpeconnections.

V 16. In a nozzlefplug, the combination of a base member carrying tubes 'contaming Copies of this patent may be obtained for five cents each, by addressing the ,00mmiss1oner c1 ream. i

leading and trailing orifices, a second member comprising a pair of reservoirs, and a detachable coupling for connecting said members together, with the tubes in communication wlth sa1d reservoirs, sa1d coupling permitting the members to be connected tomy hand this 30th day of: April, 1914. c A sTiN n; DODGE.

. v.VVitnesses: I c

l-lnLnn'Onronn, h lARGAnn'r E; VVOLLESL.

Washington, D. G. I g

Corrections in Letters Patent No. 1,192,761.

It is hereby certified that in Letters Patent No. 1,192,761, granted July 25, 1916,

upon the application of Austin R. Dodge, of Schenectady, New York, for an improvement in Nozzle-Plugs, errors appear in the printed specification requiring correction as follows: Page 1, line 35, strike out the article a; same page, line 36, for the Word embodiment read embodiments; page 2, line 10, for the Word reservoir read reservoirs; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 5th day of September, A. D., 1916.

F. W. H. CLAY, Acting Commissioner of Patents.

[smn] 

